Analysis of the Reasons for Low Temperature Instability in High and Low Temperature Damp Heat Chambers
Date: 2018-09-30Read: 2
Today, I will discuss with you the reasons why the low temperature of the high and low temperature wet heat test chamber cannot be stabilized. In detail, we often encounter problems with the use of high and low temperature wet heat test chambers, and the inability to stabilize for a long time after the low temperature drops. This fault phenomenon is also quite common. Below is an analysis of this problem
Firstly, observe whether the refrigeration compressor of the high and low temperature wet heat test chamber starts during the cooling process. That is, after setting the low temperature on the controller, after about 1 minute, listen for the sound of the compressor at the bottom of the equipment starting. I believe everyone can judge this. If the compressors of the high and low temperature wet heat test chambers can start during operation, it indicates that the electrical circuits from the main power supply to the compressors of each high and low temperature chamber are normal, and there are no problems with the electrical system.
Then check the refrigeration system. Firstly, check the two sets of refrigeration compressor units in the high and low temperature wet heat test chamber. Some brands of high and low temperature wet heat test chambers have single-stage refrigeration systems. Today, let's analyze the two sets of refrigeration compressor units. If the exhaust and suction pressures of the low-temperature (R23) stage compressor are both lower than normal, and the suction pressure is in an evacuated state, it indicates that the refrigerant amount of the main refrigeration unit is significantly insufficient. Then touch the exhaust and suction pipelines of the R23 compressor in the high and low temperature wet heat test chamber with your hand. If you find that the temperature of the exhaust pipeline is not high and the temperature of the suction pipeline is also not low (without frosting), it also indicates a lack of R23 refrigerant in the main unit.
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